Boat trolling motors offer an efficient way to navigate, especially for long trips or when you want to conserve energy.
For motorized kayaks, a trolling motor can push at speeds ranging from 2 to 6 miles per hour, depending on factors like motor size, kayak weight, and water conditions.
In this article, we’ll explore how trolling motors work on motorized kayaks, the factors affecting their speed, and how to choose best marine batteries for kayak for your needs.
Table of Content
- What is a Motorized Kayak?
- How Does a Trolling Motor Work on a Kayak?
- Factors that Influence Motorized Kayak Speed
- What Size Motor Do I Need for My Kayak?
- What Size Battery Do I Need for My Kayak?
- Best Type of Battery for Kayak Trolling Motors
- How Much Does a Kayak Motor Setup Cost?
- Boost Your Kayak with Redodo's Trolling Motor Batteries
- FAQs on Kayak Trolling Motor
What is a Motorized Kayak?
A motorized kayak is simply a kayak that is equipped with a motor, either electric or gas-powered, to assist in propulsion. Unlike traditional kayaks where paddling is the sole means of movement, motorized kayaks allow you to cover longer distances with less physical effort.
Components of a Motorized Kayak
The main components of a motorized kayak include the kayak itself, the trolling motor (usually mounted at the stern or bow), and a trolling motor battery as power source.
The motor is connected to the kayak through a mounting bracket, and it’s powered by a battery that provides the necessary energy to run the motor.
Electric Motors vs. Gas Motors
Electric trolling motors are the most common choice for kayaks. As they are powered by batteries, they feature quiet operation, ease of use, and lower maintenance needs.
On the other hand, gas motors, while offering more power and speed, are less common on kayaks. They are more used in large boats due to high power.
How Does a Trolling Motor Work on a Kayak?
A trolling motor works by converting electrical energy from a battery into mechanical energy, which then drives the motor’s propeller to move the kayak forward. This process involves several key components:
Electric Motor and Propeller
The trolling motor consists of an electric motor that powers a propeller. When activated, the motor turns the propeller, creating thrust that propels the kayak through the water.
Battery Power
Trolling motors are typically powered by deep cycle lithium marine batteries or deep cycle lead-acid batteries. These batteries are designed to provide a steady amount of power over extended periods.
Factors that Influence Motorized Kayak Speed
The speed of a motorized kayak is affected by several key factors, including water conditions, the kayak’s design, the trolling motor's power, and the battery.
Water Conditions
Water conditions, such as current and wind, have a significant impact on speed. Moving with a current or a tailwind will naturally boost your speed, while paddling against a current or into a headwind will slow you down.
Kayak Design and Weight
A kayak’s size, weight, and hull design also affect its speed. Lighter and smaller kayaks are easier to propel and typically reach higher speeds with less motor power.
Larger, heavier kayaks require more thrust. The kayak's hull shape affects how easily the motor can move it. A sleek, speed-oriented hull creates less drag, allowing for faster speeds, while a wider, more stable hull creates more resistance, requiring more power to maintain speed.
Motor Power
The power of your trolling motor is directly related to your kayak's speed. A higher-thrust motor will provide more force, propelling the kayak faster. However, stronger motors tend to drain the battery faster, and not be able to maintain that speed for as long.
Battery Capacity
The trolling motor battery plays an essential role in maintaining speed. A battery with a higher amp-hour (Ah) rating provides more energy, allowing you to sustain the motor’s performance for a longer period. If the battery has a small capacity, the electric motor may lose power or shut off soon.
Generally, a 100Ah trolling motor battery can power a kayak for an entire day. If you’re planning a half-day water adventure, our 12V 50Ah trolling motor battery is enough.
What Size Motor Do I Need for My Kayak?
A general rule of thumb is that you need about 2-2.4 lbs of thrust per 100 lbs of kayak weight to maintain a moderate speed in calm water. As most motorized kayaks weigh between 75 and 150 pounds, a 55-pound motor is sufficient in calm water.
Thrust Requirements by Kayak Type
- Small, lightweight kayaks under 12 feet typically require 30-40 lbs of thrust to reach speeds of 2-3 mph.
- Medium-sized kayaks, between 12 and 14 feet, generally need 40-55 lbs of thrust to achieve speeds of 3-4 mph.
- Larger kayaks over 14 feet typically require 55-80 lbs of thrust to reach speeds of 4-6 mph.
What Size Battery Do I Need for My Kayak?
The trolling motor battery’s size depends on the motor voltage system, motor’s thrust, and how long you want to stay on the water. If you want to run 2-3 hours on the water:
For motors with 20-30 lbs of thrust, you will need a 12V battery with a capacity of 35-60 Ah.
For motors with 30-70 lbs of thrust, a 12V battery with 60-100 Ah is recommended.
For motors with 70-100 lbs of thrust, you'll need two 12V batteries in series or a 24V lithium battery with a capacity of 80-100 Ah.
For motors with 100lbs of thrust or more, three 12V batteries in series or a 36V lithium battery you'll need.
Trolling Motor Battery Size Chart
Best Type of Battery for Kayak Trolling Motors
The common types of trolling motor battery for kayak include lead-acid batteries and lithium batteries. However, the best type of battery for your kayak is a lithium battery, particularly the LiFePO4 battery due to their superior performance, lightweight design, and long lifespan.
For example, Redodo's LiFePO4 trolling motor battery offers over 4000 cycle times at 100% discharge and can last up to 10 years. This is a significant improvement over lead-acid batteries. Additionally, LiFePO4 batteries are up to 70% lighter than lead-acid batteries, reducing the overall weight of your kayak and improving your boating experience.
How Much Does a Kayak Motor Setup Cost?
A full kayak motor setup (motor + battery + accessories) can range from $500 to $1500. Here's the cost breakdown:
Trolling Motors
Entry-level trolling motors typically range from $150 to $500 for motors with thrust ranging from 30 to 55 lbs.
High-performance motors, particularly those above 55 lbs of thrust, can cost anywhere from $300 to $1000 or more.
Trolling Motor Batteries
Lead-acid batteries generally cost between $100 to $300.
Lithium batteries, particularly LiFePO4 types, typically cost between $150 to $500 for high-quality units.
You may also need to factor in the cost of additional components like battery chargers, mounting brackets, and other accessories, which can range from $50 to $200.
Boost Your Kayak with Redodo's Trolling Motor Batteries
Redodo's LiFePO4 batteries stand out with their exceptional longevity, lightweight design, and top-tier safety features. With a lifespan of 10+ years and over 15,000 charge cycles. Designed for reliability, these batteries are IP65/IP67 rated, ensuring they are waterproof and dustproof—perfect for trolling motors and other marine applications. The upgraded BMS system adds advanced protection, making them a safe and smart choice for powering your kayak or boat.
Redodo offers high quality trolling motor batteries as below:
12V 100Ah Group 31 Lithium Battery with Bluetooth
Equipped with Bluetooth connectivity, this smart Group 31 battery allows you to monitor its status in real time, including charge levels, voltage, and cycle count, directly from your smartphone. It's ideal for those who value advanced features and precise control over their power system.
12V 100Ah Mini Lithium Battery with Bluetooth
Weighing just 19.84 lbs and measuring only 10.24 x 5.24 x 8.96 inches, the small 12V lithium ion battery is 35% smaller and 18% lighter than standard 12V 100Ah batteries, yet delivers a powerful 1280Wh output. It is also equipped with bluetooth for real-time monitoring, and the upgraded 100A BMS ensures protection against overcharge, overdischarge, overcurrent, short circuits, and high temperatures.
12V 100Ah Lithium Trolling Motor Battery
Optimized for low-temperature performance, this 12V trolling motor battery includes low-temperature protection that ensures it stops charging at 32°F (0°C) and operates reliably in conditions above -4°F (-20°C). It is ideal for year-round use in cold climates, while still offering great marine compatibility.
12V 100Ah Lithium Battery
It is an economical and reliable 12V 100Ah lithium battery. This battery is perfect for those seeking a cost-effective solution for their trolling motor needs. It offers consistent performance and is ideal for general-purpose applications, making it the go-to option for budget-conscious kayakers.
12V 50Ah Lithium Bluetooth Trolling Motor Battery
The 12V 50Ah lithium battery for trolling motor is perfect for those who enjoy occasional fishing trips. At just 11.27 lbs, it packs the same energy as a 100Ah lead-acid battery, enhancing speed and efficiency on your cruise. Its built-in Bluetooth functionality allows real-time monitoring of battery status, while the low-temperature protection guarantees safety in cold conditions.
Explore Redodo's best trolling motor batteries today and gear up for your next adventure with confidence!
FAQs on Kayak Trolling Motor
How Fast Will a 40 lb Thrust Trolling Motor Go?
A 40 lb thrust motor can push a kayak at speeds of around 3-4 mph, making it suitable for smaller to medium kayaks in calm water.
How Fast Will a 62 lb Thrust Trolling Motor Go?
A 62 lb thrust motor provides more power, allowing a larger or heavier kayak to reach speeds of 4-5 mph.
What Size Boat Can a 55lb Trolling Motor Push?
A 55lb thrust trolling motor is suitable for powering small to medium-sized boats (weighing up to 2000 lbs), such as jon boats, small fishing boats, kayaks, or bass boats.
Is a Motorized Kayak Worth It?
Yes, a motorized kayak is definitely worth it, especially for those who want to cover longer distances or need extra mobility without the physical strain of paddling. With a motorized setup, you can save energy, travel faster, and enjoy a more relaxed kayaking experience.
Read More:
12V/24V/36V Trolling Motor Battery System
Redodo
Redodo
Related Products
Redodo 12V 100Ah Group 31 Smart Bluetooth Lithium Battery | Real-Time Battery Monitoring
Redodo 12V 140Ah Group 31 Deep Cycle Lithium Battery with Bluetooth | Same Size, 40% More Capacity
Redodo 12V 50Ah Bluetooth Lithium LiFePO4 Battery for Trolling Motors (Up to 70lb Thrust)
Redodo 24V 50Ah Trolling Motor Battery with Bluetooth for 24V Trolling Motors with up to 100 lbs
Redodo 36V 50Ah Lithium Trolling Motor Battery for 36V Trolling Motors with 100-120 lbs
